Details
| Original language | English |
|---|---|
| Pages (from-to) | 1656-1658 |
| Number of pages | 3 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 40 |
| Issue number | 5 |
| Publication status | Published - 1 Mar 2008 |
Abstract
We present transport measurements on a lateral triple quantum dot made with local anodic oxidation on a GaAs/AlGaAs heterostructure. The device is formed in a star like geometry with each dot connected to the other two. Three leads are used to measure the conductance of the device simultaneously via different paths. Furthermore a quantum point contact is built in close vicinity to the dots. Thus the charge on the dots can be detected. In charge stability diagrams clear anticrossings are visible when states of two dots come into resonance forming triple points. Using a third gate resonances of all three dots can be established where three triple points meet in the so-called quadruple points. With one lead used as the source contact and the other two used as two different drain contacts signatures of the three dots are visible in transport via both transport paths.
Keywords
- Charge detection, Triple quantum dots
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 40, No. 5, 01.03.2008, p. 1656-1658.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Star shaped triple quantum dot with charge detection
AU - Rogge, M. C.
AU - Haug, R. J.
PY - 2008/3/1
Y1 - 2008/3/1
N2 - We present transport measurements on a lateral triple quantum dot made with local anodic oxidation on a GaAs/AlGaAs heterostructure. The device is formed in a star like geometry with each dot connected to the other two. Three leads are used to measure the conductance of the device simultaneously via different paths. Furthermore a quantum point contact is built in close vicinity to the dots. Thus the charge on the dots can be detected. In charge stability diagrams clear anticrossings are visible when states of two dots come into resonance forming triple points. Using a third gate resonances of all three dots can be established where three triple points meet in the so-called quadruple points. With one lead used as the source contact and the other two used as two different drain contacts signatures of the three dots are visible in transport via both transport paths.
AB - We present transport measurements on a lateral triple quantum dot made with local anodic oxidation on a GaAs/AlGaAs heterostructure. The device is formed in a star like geometry with each dot connected to the other two. Three leads are used to measure the conductance of the device simultaneously via different paths. Furthermore a quantum point contact is built in close vicinity to the dots. Thus the charge on the dots can be detected. In charge stability diagrams clear anticrossings are visible when states of two dots come into resonance forming triple points. Using a third gate resonances of all three dots can be established where three triple points meet in the so-called quadruple points. With one lead used as the source contact and the other two used as two different drain contacts signatures of the three dots are visible in transport via both transport paths.
KW - Charge detection
KW - Triple quantum dots
UR - http://www.scopus.com/inward/record.url?scp=39649083576&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2007.10.015
DO - 10.1016/j.physe.2007.10.015
M3 - Article
AN - SCOPUS:39649083576
VL - 40
SP - 1656
EP - 1658
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 5
ER -